Joseph h



UNITED STATES PATENT OFFICE.

JOSEPH H. DESALUSSE, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO ALFRED B. JUSTICE, OF SAME PLACE.

FASTENING KEYS IN LOCKS.

Speeication forming part of Letters Patent No. 49,338, dated August 8, 1865.

To all whom it may concern:

Be it known that I, JOSEPH H. DEsALUssE, ofthe city and county of Philadelphia, Penn- Sylvania, have invented a new and Improved Mode of ProteetingLocks,in a manner and for the purpose as hereinafter described.

My invention consists in the employment of u revolving escutcheon in combination with a pawl, for the purpose of securinglocks, as hereinafter described.

In order to enable others to use and practice my invention, I will proceed to describe its construction and operation.

In reference to the accompanying drawings,

which form a part of the speciication, Figure l represents the protector as attached to an ordinary door and lock, of which a represents a detached piece ofa door 5 b, a plate for retaining the revolving escutcheon c, in which the keyholenis cut. Two pins,f, are placed near the key-hole in such a manner as to receive the pawl c, when the key, which presents the same square igure as the key-hole, is used to shut the bolt r of the lock and to holdit at the very time the ward of the key is engaged in the notch of the said bolt. The pawl or drop-es cutcheon c presents underneath a notch, in which the two pins fcan easily pass without preventing the said pawl from hiding the'keyhole. Thepawl in that position is stopped from going any farther by a pin, h, against which comes to rest the projection lc of the said pawl. Two screws, (l and g, are used for fixing the plate JOSEPH H. DESALUSSE.

Witnesses:

FLOR. W. GRUGAN, A. E. WITMER. 

